为有效改善TC4合金表面的耐磨性能,以TC4+NiCr-Cr3C2为熔覆材料,利用德国通快4002同轴送粉激光器,在TC4表面熔覆了TiC增强钛基涂层。采用多种实验表征技术手段和测试设备研究分析了涂层微观组织和耐磨性能。结果表明：熔覆层生成相主要由增强相TiC和连续基体相α-Ti组成;涂层表面层中TiC主要以颗粒状相形式存在,中间层以树枝晶状相形式存在,结合区以羽毛状相形式存在;Ni、Cr、Al和V元素未与Ti元素形成反应析出物,属于基体固溶元素;涂层平均显微硬度（536 HV0.5）的提升得益于TiC和Ni、Cr、Al、V元素在基体中的强化固溶,较TC4基材显微硬度提高了约50%,涂层磨损体积和摩擦系数较TC4基材分别下降了约27%和25%,磨损机理为磨粒磨损。

To effectively improve the wear resistance of TC4 alloy, TC4 + NiCr/Cr3C2 is used as the cladding material. In addition, the TiC-reinforced Ti-based coating is prepared on the TC4 alloy surface using the TRUMPF 4002 coaxial powder-feeding laser. Using various experimental characterization techniques and test equipments, the microstructure and wear resistance of the coating are investigated and analyzed. The results indicate that the cladding layer formation is mainly composed of the reinforcing phase TiC and the continuous matrix phase α-Ti. The TiC in the subsurface layer of the coating is mainly in the form of granular phase; the middle region, in the form of dendrite phase; the bonding zone, in the form of feather phase. The Ni, Cr, Al, and V elements, which are matrix solid solution elements, form reaction precipitates with the Ti element. The improvement in the average microhardness （536 HV0.5） of the coating is attributed to the TiC and strengthening solid solution of the Ni, Cr, Al, and V elements in the matrix, and the microhardness is approximately 50% higher than the microhardness of the TC4 substrate. The wear volume and friction coefficient of the coating are 27% and 25% lower than those of the TC4 substrate, respectively, with the wear mechanism being abrasive wear.